Common tools include a measuring tape, level, ladder, drill, hacksaw, sealant, gutter brackets, and downspout attachments.

Gutters should be deep enough to handle the expected water flow, typically 5 or 6 inches deep, depending on the roof size and local climate.

The maximum length of a gutter run without needing an expansion joint or additional downspout is generally 40 to 50 feet.

Planning involves measuring the roofline, determining the slope for drainage, marking downspout locations, and ensuring proper support using hangers or brackets spaced 3 feet apart.